Answer:
<h2>x = 12</h2>
Step-by-step explanation:
ΔADC and ΔCDB are similar (AA). Therefore the sides are in proportion:
![\dfrac{AD}{DC}=\dfrac{DC}{DB}](https://tex.z-dn.net/?f=%5Cdfrac%7BAD%7D%7BDC%7D%3D%5Cdfrac%7BDC%7D%7BDB%7D)
We have AD = 16, DC = x, DB = 9. Substitute:
<em>cross multiply</em>
![x^2=(16)(9)\to x=\sqrt{(16)(9)}\\\\x=\sqrt{16}\cdot\sqrt9\\\\x=4\cdot3\\\\x=12](https://tex.z-dn.net/?f=x%5E2%3D%2816%29%289%29%5Cto%20x%3D%5Csqrt%7B%2816%29%289%29%7D%5C%5C%5C%5Cx%3D%5Csqrt%7B16%7D%5Ccdot%5Csqrt9%5C%5C%5C%5Cx%3D4%5Ccdot3%5C%5C%5C%5Cx%3D12)
Answer:
It would be positive(4,4)
Step-by-step explanation:
hope it helps
Answer:
About 40 Minutes, Or something close to that
Step-by-step explanation:
The car covers 60 km in 90 minutes or its speed = 60 km*60/90 min = 40 km/hr . So to cover 100 km at the same speed it will take 100/40 = 40 Min
Answer:
this is my attempt, it might not be right, so please dont be mad if wrong
Step-by-step explanation:
27 * x^3 = 6561x-5 , 49x + 1 = 117649x-2